Tools & materials
Tools
- Reliable tire gauge
- Air source
Parts / materials
- Valve caps if missing
Preparation
- Find the driver-door placard and check tires before driving or after several hours parked.
Step by step
- 01Remove each valve cap and press the gauge squarely onto the stem.
- 02Compare the cold reading to the front/rear placard values.
- 03Add or release air in small amounts and recheck.
- 04Inspect for cuts, bulges, objects, or a tire that loses pressure again. Replace valve caps.
What success looks like
All four road tires match the cold placard values and hold pressure.
Common mistakes
- Using sidewall maximum pressure
- Checking hot tires
- Ignoring repeat pressure loss
Call a professional
Have repeated loss, sidewall damage, bulges, exposed cords, or a damaged valve inspected immediately.